April weather in San Luis Obispo, CA
The average temperature in San Luis Obispo in April is 57.4°F (45.6°F–69.1°F). Average precipitation: 1.05 inches.
April is a spring month in San Luis Obispo, and is cooler than the annual average of 59.7°F. Daily temperatures swing about 23.5°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 12h 54m. For travel, April is a comfortable month to visit.
Avg High
69.1°F
Avg Low
45.6°F
Precipitation
1.05 in
Daylight
12h 54m
April records in San Luis Obispo
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| April 1 | 86.0°F (2021) | 36.0°F (2008) | 0.36 in (2014) |
| April 2 | 81.0°F (2000) | 32.0°F (1999) | 0.61 in (2006) |
| April 3 | 82.9°F (2015) | 34.0°F (1999) | 1.86 in (2006) |
| April 4 | 84.9°F (2026) | 30.0°F (1999) | 0.49 in (2006) |
| April 5 | 89.1°F (2016) | 36.0°F (1999) | 0.93 in (2020) |
| April 6 | 96.1°F (2022) | 37.9°F (2006) | 0.46 in (2001) |
| April 7 | 91.0°F (2022) | 36.0°F (1999) | 0.63 in (2017) |
| April 8 | 93.0°F (2022) | 32.0°F (2001) | 0.17 in (2016) |
| April 9 | 91.0°F (2018) | 34.0°F (1999) | 0.17 in (2020) |
| April 10 | 82.9°F (2024) | 37.0°F (1999) | 0.73 in (2012) |
| April 11 | 82.0°F (2025) | 37.0°F (1999) | 1.17 in (1999) |
| April 12 | 90.0°F (2008) | 34.0°F (1998) | 0.71 in (2003) |
| April 13 | 95.0°F (2002) | 37.9°F (1998) | 1.43 in (2012) |
| April 14 | 84.0°F (2002) | 37.9°F (2001) | 1.67 in (2000) |
| April 15 | 82.9°F (1999) | 35.1°F (1998) | 0.04 in (2006) |
| April 16 | 87.1°F (1999) | 37.0°F (2001) | 0.17 in (2000) |
| April 17 | 88.0°F (2016) | 36.0°F (2013) | 2.05 in (2000) |
| April 18 | 88.0°F (2016) | 37.0°F (2003) | 0.42 in (2017) |
| April 19 | 96.1°F (2009) | 37.0°F (2005) | 0.13 in (2007) |
| April 20 | 100.9°F (2009) | 37.9°F (2005) | 0.52 in (2010) |
| April 21 | 97.0°F (2009) | 37.9°F (2005) | 0.25 in (2022) |
| April 22 | 80.1°F (2017) | 36.0°F (2003) | 0.29 in (2007) |
| April 23 | 82.9°F (2019) | 36.0°F (1999) | 0.12 in (2005) |
| April 24 | 86.0°F (2020) | 39.0°F (2003) | 0.02 in (2003) |
| April 25 | 86.0°F (2020) | 37.9°F (2009) | 0.31 in (2015) |
| April 26 | 100.0°F (2004) | 39.9°F (2003) | 0.78 in (2006) |
| April 27 | 99.0°F (2004) | 39.0°F (2003) | 0.26 in (2005) |
| April 28 | 82.9°F (2007) | 39.9°F (2002) | 0.61 in (2005) |
| April 29 | 96.1°F (2014) | 37.0°F (2003) | 0.22 in (2019) |
| April 30 | 97.0°F (2014) | 39.9°F (2003) | 0.00 in (1998) |